I would stick with it being a green treefrog. I'm not really that familiar with your local species but the other one that comes to mind is the squirrel treefrog.

My understanding about green trees is that they exhibit a very large range of color variations and some lack the stripe along the side (like yours). That one almost looks bluish as if it's missing yellow pigment in its skin. I know that Green Frogs of the genus Rana sometimes lack the yellow pigment and turn out looking more blue than anything else. That's food for thought anyway